./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:48:16,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:48:16,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:48:16,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:48:16,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:48:16,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:48:16,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:48:16,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:48:16,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:48:16,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:48:16,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:48:16,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:48:16,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:48:16,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:48:16,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:48:16,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:48:16,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:48:16,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:48:16,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:48:16,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:48:16,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:48:16,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:48:16,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:48:16,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:48:16,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:48:16,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:48:16,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:48:16,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:48:16,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:48:16,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:48:16,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:48:16,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:48:16,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:48:16,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:48:16,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:48:16,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:48:16,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:48:16,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:48:16,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:48:16,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:48:16,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:48:16,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:48:16,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:48:16,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:48:16,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:48:16,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:48:16,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:48:16,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:48:16,774 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:48:16,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:48:16,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:48:16,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:48:16,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:48:16,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:48:16,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:48:16,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:48:16,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:48:16,776 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:48:16,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:48:16,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:48:16,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:48:16,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:48:16,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:48:16,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:48:16,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:48:16,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:48:16,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:48:16,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:48:16,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:48:16,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:48:16,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:48:16,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:48:16,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:48:16,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:48:16,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2021-10-28 22:48:17,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:48:17,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:48:17,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:48:17,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:48:17,167 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:48:17,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2021-10-28 22:48:17,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/data/1ce12e537/3e2e2dc1c9a64fd1bebe080b28bcd8e1/FLAG38920fde1 [2021-10-28 22:48:17,811 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:48:17,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2021-10-28 22:48:17,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/data/1ce12e537/3e2e2dc1c9a64fd1bebe080b28bcd8e1/FLAG38920fde1 [2021-10-28 22:48:18,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/data/1ce12e537/3e2e2dc1c9a64fd1bebe080b28bcd8e1 [2021-10-28 22:48:18,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:48:18,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:48:18,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:18,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:48:18,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:48:18,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552f7100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18, skipping insertion in model container [2021-10-28 22:48:18,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:48:18,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:48:18,451 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2021-10-28 22:48:18,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:18,485 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:48:18,511 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2021-10-28 22:48:18,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:48:18,533 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:48:18,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18 WrapperNode [2021-10-28 22:48:18,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:48:18,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:48:18,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:48:18,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:48:18,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:48:18,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:48:18,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:48:18,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:48:18,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:48:18,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:48:18,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:48:18,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:48:18,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (1/1) ... [2021-10-28 22:48:18,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:48:18,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:18,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:48:18,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:48:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-28 22:48:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-28 22:48:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-28 22:48:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-28 22:48:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-28 22:48:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-28 22:48:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:48:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:48:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:48:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 22:48:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:48:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:48:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:48:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:48:18,751 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 22:48:19,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:48:19,282 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-28 22:48:19,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:19 BoogieIcfgContainer [2021-10-28 22:48:19,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:48:19,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:48:19,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:48:19,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:48:19,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:48:18" (1/3) ... [2021-10-28 22:48:19,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd81ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:19, skipping insertion in model container [2021-10-28 22:48:19,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:48:18" (2/3) ... [2021-10-28 22:48:19,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd81ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:48:19, skipping insertion in model container [2021-10-28 22:48:19,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:19" (3/3) ... [2021-10-28 22:48:19,300 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2021-10-28 22:48:19,306 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 22:48:19,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:48:19,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:48:19,313 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 22:48:19,373 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,374 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,374 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,375 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,375 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,375 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,375 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,376 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,376 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,377 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,378 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,379 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,379 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,379 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,380 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,380 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,380 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,380 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,381 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,384 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,384 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,386 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,387 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,388 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,388 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,389 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,389 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,391 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,391 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,392 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,392 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,392 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,393 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,393 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,394 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,394 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,394 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,395 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,395 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,395 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,396 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,396 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,397 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,397 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,397 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,398 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,398 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,406 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,407 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,410 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,415 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,416 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,426 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 22:48:19,447 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 22:48:19,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:48:19,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:48:19,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 22:48:19,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 146 transitions, 316 flow [2021-10-28 22:48:19,634 INFO L129 PetriNetUnfolder]: 12/143 cut-off events. [2021-10-28 22:48:19,634 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 22:48:19,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 143 events. 12/143 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2021-10-28 22:48:19,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 146 transitions, 316 flow [2021-10-28 22:48:19,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 133 transitions, 284 flow [2021-10-28 22:48:19,712 INFO L129 PetriNetUnfolder]: 12/132 cut-off events. [2021-10-28 22:48:19,712 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 22:48:19,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:19,714 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:19,714 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash -575693921, now seen corresponding path program 1 times [2021-10-28 22:48:19,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:19,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752194928] [2021-10-28 22:48:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:19,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:20,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:20,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752194928] [2021-10-28 22:48:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752194928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:20,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:20,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:48:20,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061444553] [2021-10-28 22:48:20,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 22:48:20,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 22:48:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 22:48:20,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 146 [2021-10-28 22:48:20,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 133 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:20,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 146 [2021-10-28 22:48:20,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:20,136 INFO L129 PetriNetUnfolder]: 4/125 cut-off events. [2021-10-28 22:48:20,137 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 22:48:20,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 125 events. 4/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 8/125 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2021-10-28 22:48:20,140 INFO L132 encePairwiseOnDemand]: 138/146 looper letters, 0 selfloop transitions, 0 changer transitions 4/125 dead transitions. [2021-10-28 22:48:20,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 125 transitions, 268 flow [2021-10-28 22:48:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 22:48:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-28 22:48:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2021-10-28 22:48:20,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9657534246575342 [2021-10-28 22:48:20,176 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2021-10-28 22:48:20,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2021-10-28 22:48:20,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2021-10-28 22:48:20,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,205 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,208 INFO L186 Difference]: Start difference. First operand has 131 places, 133 transitions, 284 flow. Second operand 2 states and 282 transitions. [2021-10-28 22:48:20,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 125 transitions, 268 flow [2021-10-28 22:48:20,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 256 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 22:48:20,230 INFO L242 Difference]: Finished difference. Result has 126 places, 121 transitions, 248 flow [2021-10-28 22:48:20,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=248, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2021-10-28 22:48:20,234 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, -5 predicate places. [2021-10-28 22:48:20,235 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 248 flow [2021-10-28 22:48:20,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.0) internal successors, (276), 2 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:20,236 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:20,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:48:20,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1928659383, now seen corresponding path program 1 times [2021-10-28 22:48:20,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:20,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695475249] [2021-10-28 22:48:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:20,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:20,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:20,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695475249] [2021-10-28 22:48:20,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695475249] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:20,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:20,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:48:20,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183029743] [2021-10-28 22:48:20,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:48:20,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:48:20,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:48:20,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 146 [2021-10-28 22:48:20,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:20,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:20,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 146 [2021-10-28 22:48:20,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:21,096 INFO L129 PetriNetUnfolder]: 22/228 cut-off events. [2021-10-28 22:48:21,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 22:48:21,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 228 events. 22/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 601 event pairs, 1 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 285. Up to 21 conditions per place. [2021-10-28 22:48:21,101 INFO L132 encePairwiseOnDemand]: 137/146 looper letters, 30 selfloop transitions, 9 changer transitions 3/141 dead transitions. [2021-10-28 22:48:21,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 141 transitions, 372 flow [2021-10-28 22:48:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:48:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 22:48:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 820 transitions. [2021-10-28 22:48:21,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8023483365949119 [2021-10-28 22:48:21,112 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 820 transitions. [2021-10-28 22:48:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 820 transitions. [2021-10-28 22:48:21,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:21,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 820 transitions. [2021-10-28 22:48:21,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,126 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,126 INFO L186 Difference]: Start difference. First operand has 126 places, 121 transitions, 248 flow. Second operand 7 states and 820 transitions. [2021-10-28 22:48:21,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 141 transitions, 372 flow [2021-10-28 22:48:21,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 141 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 22:48:21,134 INFO L242 Difference]: Finished difference. Result has 132 places, 127 transitions, 301 flow [2021-10-28 22:48:21,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2021-10-28 22:48:21,135 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 1 predicate places. [2021-10-28 22:48:21,136 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 301 flow [2021-10-28 22:48:21,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:21,137 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:21,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 22:48:21,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 100301781, now seen corresponding path program 1 times [2021-10-28 22:48:21,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:21,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041597979] [2021-10-28 22:48:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:21,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:21,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:21,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041597979] [2021-10-28 22:48:21,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041597979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:21,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:21,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 22:48:21,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070589462] [2021-10-28 22:48:21,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:48:21,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:48:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:48:21,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2021-10-28 22:48:21,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:21,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2021-10-28 22:48:21,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:21,700 INFO L129 PetriNetUnfolder]: 115/630 cut-off events. [2021-10-28 22:48:21,700 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-28 22:48:21,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 630 events. 115/630 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3686 event pairs, 50 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 909. Up to 142 conditions per place. [2021-10-28 22:48:21,715 INFO L132 encePairwiseOnDemand]: 137/146 looper letters, 29 selfloop transitions, 8 changer transitions 0/140 dead transitions. [2021-10-28 22:48:21,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 402 flow [2021-10-28 22:48:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:48:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 22:48:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2021-10-28 22:48:21,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8065068493150684 [2021-10-28 22:48:21,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2021-10-28 22:48:21,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2021-10-28 22:48:21,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:21,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2021-10-28 22:48:21,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,734 INFO L186 Difference]: Start difference. First operand has 132 places, 127 transitions, 301 flow. Second operand 8 states and 942 transitions. [2021-10-28 22:48:21,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 402 flow [2021-10-28 22:48:21,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 140 transitions, 398 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-28 22:48:21,742 INFO L242 Difference]: Finished difference. Result has 138 places, 130 transitions, 333 flow [2021-10-28 22:48:21,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=138, PETRI_TRANSITIONS=130} [2021-10-28 22:48:21,743 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 7 predicate places. [2021-10-28 22:48:21,743 INFO L470 AbstractCegarLoop]: Abstraction has has 138 places, 130 transitions, 333 flow [2021-10-28 22:48:21,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:21,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:21,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:48:21,745 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1916064415, now seen corresponding path program 1 times [2021-10-28 22:48:21,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035977677] [2021-10-28 22:48:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:21,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:22,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:22,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035977677] [2021-10-28 22:48:22,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035977677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:22,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:22,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 22:48:22,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030167982] [2021-10-28 22:48:22,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:48:22,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:22,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:48:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:48:22,233 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 146 [2021-10-28 22:48:22,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 333 flow. Second operand has 10 states, 10 states have (on average 94.6) internal successors, (946), 10 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:22,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:22,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 146 [2021-10-28 22:48:22,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:23,167 INFO L129 PetriNetUnfolder]: 514/1537 cut-off events. [2021-10-28 22:48:23,167 INFO L130 PetriNetUnfolder]: For 147/165 co-relation queries the response was YES. [2021-10-28 22:48:23,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1537 events. 514/1537 cut-off events. For 147/165 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10970 event pairs, 341 based on Foata normal form. 18/1333 useless extension candidates. Maximal degree in co-relation 2609. Up to 661 conditions per place. [2021-10-28 22:48:23,194 INFO L132 encePairwiseOnDemand]: 134/146 looper letters, 55 selfloop transitions, 11 changer transitions 0/152 dead transitions. [2021-10-28 22:48:23,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 152 transitions, 512 flow [2021-10-28 22:48:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:48:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 22:48:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1068 transitions. [2021-10-28 22:48:23,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6650062266500623 [2021-10-28 22:48:23,201 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1068 transitions. [2021-10-28 22:48:23,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1068 transitions. [2021-10-28 22:48:23,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:23,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1068 transitions. [2021-10-28 22:48:23,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 97.0909090909091) internal successors, (1068), 11 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:23,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:23,217 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:23,217 INFO L186 Difference]: Start difference. First operand has 138 places, 130 transitions, 333 flow. Second operand 11 states and 1068 transitions. [2021-10-28 22:48:23,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 152 transitions, 512 flow [2021-10-28 22:48:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 502 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 22:48:23,228 INFO L242 Difference]: Finished difference. Result has 149 places, 134 transitions, 372 flow [2021-10-28 22:48:23,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=372, PETRI_PLACES=149, PETRI_TRANSITIONS=134} [2021-10-28 22:48:23,229 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 18 predicate places. [2021-10-28 22:48:23,229 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 134 transitions, 372 flow [2021-10-28 22:48:23,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.6) internal successors, (946), 10 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:23,230 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:23,230 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 22:48:23,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:23,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash 189057301, now seen corresponding path program 1 times [2021-10-28 22:48:23,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:23,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538298033] [2021-10-28 22:48:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:23,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:48:23,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:23,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538298033] [2021-10-28 22:48:23,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538298033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:23,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:23,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 22:48:23,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139499837] [2021-10-28 22:48:23,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:48:23,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:48:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:48:23,627 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 146 [2021-10-28 22:48:23,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 134 transitions, 372 flow. Second operand has 11 states, 11 states have (on average 95.18181818181819) internal successors, (1047), 11 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:23,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:23,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 146 [2021-10-28 22:48:23,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:24,424 INFO L129 PetriNetUnfolder]: 456/1152 cut-off events. [2021-10-28 22:48:24,428 INFO L130 PetriNetUnfolder]: For 247/260 co-relation queries the response was YES. [2021-10-28 22:48:24,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1152 events. 456/1152 cut-off events. For 247/260 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7137 event pairs, 254 based on Foata normal form. 13/1025 useless extension candidates. Maximal degree in co-relation 2232. Up to 534 conditions per place. [2021-10-28 22:48:24,449 INFO L132 encePairwiseOnDemand]: 133/146 looper letters, 42 selfloop transitions, 7 changer transitions 14/149 dead transitions. [2021-10-28 22:48:24,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 149 transitions, 529 flow [2021-10-28 22:48:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:48:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 22:48:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1166 transitions. [2021-10-28 22:48:24,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6655251141552512 [2021-10-28 22:48:24,456 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1166 transitions. [2021-10-28 22:48:24,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1166 transitions. [2021-10-28 22:48:24,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:24,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1166 transitions. [2021-10-28 22:48:24,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 97.16666666666667) internal successors, (1166), 12 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:24,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 146.0) internal successors, (1898), 13 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:24,474 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 146.0) internal successors, (1898), 13 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:24,474 INFO L186 Difference]: Start difference. First operand has 149 places, 134 transitions, 372 flow. Second operand 12 states and 1166 transitions. [2021-10-28 22:48:24,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 149 transitions, 529 flow [2021-10-28 22:48:24,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 149 transitions, 516 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 22:48:24,489 INFO L242 Difference]: Finished difference. Result has 157 places, 128 transitions, 339 flow [2021-10-28 22:48:24,490 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=339, PETRI_PLACES=157, PETRI_TRANSITIONS=128} [2021-10-28 22:48:24,490 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 26 predicate places. [2021-10-28 22:48:24,490 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 128 transitions, 339 flow [2021-10-28 22:48:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 95.18181818181819) internal successors, (1047), 11 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:24,491 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:24,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:24,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 22:48:24,492 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:24,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash 24216715, now seen corresponding path program 1 times [2021-10-28 22:48:24,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:24,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155606919] [2021-10-28 22:48:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:24,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:24,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:24,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155606919] [2021-10-28 22:48:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155606919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:24,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359291485] [2021-10-28 22:48:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:24,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:24,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:24,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:48:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:24,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:48:24,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:25,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359291485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:25,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:25,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 22:48:25,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266877330] [2021-10-28 22:48:25,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:48:25,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:48:25,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:48:25,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 146 [2021-10-28 22:48:25,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 128 transitions, 339 flow. Second operand has 14 states, 14 states have (on average 106.57142857142857) internal successors, (1492), 14 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:25,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:25,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 146 [2021-10-28 22:48:25,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:26,427 INFO L129 PetriNetUnfolder]: 1036/2352 cut-off events. [2021-10-28 22:48:26,427 INFO L130 PetriNetUnfolder]: For 569/570 co-relation queries the response was YES. [2021-10-28 22:48:26,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 2352 events. 1036/2352 cut-off events. For 569/570 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17701 event pairs, 277 based on Foata normal form. 5/2300 useless extension candidates. Maximal degree in co-relation 4880. Up to 465 conditions per place. [2021-10-28 22:48:26,469 INFO L132 encePairwiseOnDemand]: 134/146 looper letters, 64 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2021-10-28 22:48:26,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 177 transitions, 639 flow [2021-10-28 22:48:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 22:48:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 22:48:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1436 transitions. [2021-10-28 22:48:26,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7565858798735511 [2021-10-28 22:48:26,477 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1436 transitions. [2021-10-28 22:48:26,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1436 transitions. [2021-10-28 22:48:26,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:26,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1436 transitions. [2021-10-28 22:48:26,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 110.46153846153847) internal successors, (1436), 13 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:26,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:26,494 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:26,494 INFO L186 Difference]: Start difference. First operand has 157 places, 128 transitions, 339 flow. Second operand 13 states and 1436 transitions. [2021-10-28 22:48:26,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 177 transitions, 639 flow [2021-10-28 22:48:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 177 transitions, 576 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-10-28 22:48:26,513 INFO L242 Difference]: Finished difference. Result has 148 places, 141 transitions, 407 flow [2021-10-28 22:48:26,513 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=407, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2021-10-28 22:48:26,514 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 17 predicate places. [2021-10-28 22:48:26,514 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 407 flow [2021-10-28 22:48:26,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.57142857142857) internal successors, (1492), 14 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:26,515 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:26,515 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:26,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:26,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:26,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1367280875, now seen corresponding path program 2 times [2021-10-28 22:48:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:26,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934776627] [2021-10-28 22:48:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:26,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:26,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:26,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934776627] [2021-10-28 22:48:26,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934776627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:26,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078254841] [2021-10-28 22:48:26,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:48:26,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:26,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:26,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:48:27,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:48:27,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:48:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:48:27,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:27,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078254841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:27,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:27,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 22:48:27,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077041139] [2021-10-28 22:48:27,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:48:27,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:48:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:48:27,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 146 [2021-10-28 22:48:27,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 407 flow. Second operand has 14 states, 14 states have (on average 106.42857142857143) internal successors, (1490), 14 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:27,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:27,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 146 [2021-10-28 22:48:27,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:28,517 INFO L129 PetriNetUnfolder]: 1438/3095 cut-off events. [2021-10-28 22:48:28,517 INFO L130 PetriNetUnfolder]: For 970/986 co-relation queries the response was YES. [2021-10-28 22:48:28,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 3095 events. 1438/3095 cut-off events. For 970/986 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 24203 event pairs, 397 based on Foata normal form. 11/2712 useless extension candidates. Maximal degree in co-relation 7033. Up to 835 conditions per place. [2021-10-28 22:48:28,575 INFO L132 encePairwiseOnDemand]: 133/146 looper letters, 76 selfloop transitions, 24 changer transitions 0/194 dead transitions. [2021-10-28 22:48:28,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 194 transitions, 781 flow [2021-10-28 22:48:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:48:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 22:48:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1337 transitions. [2021-10-28 22:48:28,583 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631278538812786 [2021-10-28 22:48:28,583 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1337 transitions. [2021-10-28 22:48:28,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1337 transitions. [2021-10-28 22:48:28,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:28,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1337 transitions. [2021-10-28 22:48:28,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.41666666666667) internal successors, (1337), 12 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:28,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 146.0) internal successors, (1898), 13 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:28,599 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 146.0) internal successors, (1898), 13 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:28,599 INFO L186 Difference]: Start difference. First operand has 148 places, 141 transitions, 407 flow. Second operand 12 states and 1337 transitions. [2021-10-28 22:48:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 194 transitions, 781 flow [2021-10-28 22:48:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 194 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 22:48:28,615 INFO L242 Difference]: Finished difference. Result has 159 places, 155 transitions, 561 flow [2021-10-28 22:48:28,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=561, PETRI_PLACES=159, PETRI_TRANSITIONS=155} [2021-10-28 22:48:28,616 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 28 predicate places. [2021-10-28 22:48:28,617 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 155 transitions, 561 flow [2021-10-28 22:48:28,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.42857142857143) internal successors, (1490), 14 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:28,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:28,618 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:28,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:28,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:28,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -504199909, now seen corresponding path program 3 times [2021-10-28 22:48:28,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:28,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631730707] [2021-10-28 22:48:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:28,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:29,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:29,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631730707] [2021-10-28 22:48:29,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631730707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:29,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39385645] [2021-10-28 22:48:29,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:48:29,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:29,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:29,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:29,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:48:29,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 22:48:29,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:48:29,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:48:29,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:29,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39385645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:29,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:29,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-10-28 22:48:29,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375111103] [2021-10-28 22:48:29,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:48:29,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:48:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:48:29,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 146 [2021-10-28 22:48:29,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 155 transitions, 561 flow. Second operand has 13 states, 13 states have (on average 106.53846153846153) internal successors, (1385), 13 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:29,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:29,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 146 [2021-10-28 22:48:29,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:31,058 INFO L129 PetriNetUnfolder]: 1881/4150 cut-off events. [2021-10-28 22:48:31,058 INFO L130 PetriNetUnfolder]: For 3417/3433 co-relation queries the response was YES. [2021-10-28 22:48:31,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10708 conditions, 4150 events. 1881/4150 cut-off events. For 3417/3433 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33909 event pairs, 754 based on Foata normal form. 8/3653 useless extension candidates. Maximal degree in co-relation 10691. Up to 1482 conditions per place. [2021-10-28 22:48:31,140 INFO L132 encePairwiseOnDemand]: 135/146 looper letters, 86 selfloop transitions, 22 changer transitions 0/202 dead transitions. [2021-10-28 22:48:31,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 202 transitions, 1024 flow [2021-10-28 22:48:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:48:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 22:48:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1105 transitions. [2021-10-28 22:48:31,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7568493150684932 [2021-10-28 22:48:31,147 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1105 transitions. [2021-10-28 22:48:31,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1105 transitions. [2021-10-28 22:48:31,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:31,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1105 transitions. [2021-10-28 22:48:31,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.5) internal successors, (1105), 10 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:31,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:31,161 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:31,161 INFO L186 Difference]: Start difference. First operand has 159 places, 155 transitions, 561 flow. Second operand 10 states and 1105 transitions. [2021-10-28 22:48:31,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 202 transitions, 1024 flow [2021-10-28 22:48:31,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 202 transitions, 1007 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-28 22:48:31,191 INFO L242 Difference]: Finished difference. Result has 166 places, 163 transitions, 686 flow [2021-10-28 22:48:31,192 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=166, PETRI_TRANSITIONS=163} [2021-10-28 22:48:31,192 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 35 predicate places. [2021-10-28 22:48:31,193 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 163 transitions, 686 flow [2021-10-28 22:48:31,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.53846153846153) internal successors, (1385), 13 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:31,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:31,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:31,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:31,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:31,421 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1665500759, now seen corresponding path program 4 times [2021-10-28 22:48:31,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:31,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283815406] [2021-10-28 22:48:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:31,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:31,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:31,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283815406] [2021-10-28 22:48:31,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283815406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:31,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352202862] [2021-10-28 22:48:31,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:48:31,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:31,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:31,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 22:48:31,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:48:31,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:48:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 22:48:31,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:32,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352202862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:32,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:32,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-10-28 22:48:32,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744521177] [2021-10-28 22:48:32,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:48:32,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:48:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:48:32,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 146 [2021-10-28 22:48:32,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 163 transitions, 686 flow. Second operand has 14 states, 14 states have (on average 106.35714285714286) internal successors, (1489), 14 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:32,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:32,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 146 [2021-10-28 22:48:32,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:33,901 INFO L129 PetriNetUnfolder]: 1882/4126 cut-off events. [2021-10-28 22:48:33,901 INFO L130 PetriNetUnfolder]: For 4798/4814 co-relation queries the response was YES. [2021-10-28 22:48:33,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11279 conditions, 4126 events. 1882/4126 cut-off events. For 4798/4814 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 33667 event pairs, 366 based on Foata normal form. 19/3621 useless extension candidates. Maximal degree in co-relation 11259. Up to 640 conditions per place. [2021-10-28 22:48:33,978 INFO L132 encePairwiseOnDemand]: 133/146 looper letters, 79 selfloop transitions, 40 changer transitions 0/213 dead transitions. [2021-10-28 22:48:33,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 213 transitions, 1088 flow [2021-10-28 22:48:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:48:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 22:48:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1556 transitions. [2021-10-28 22:48:33,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761252446183953 [2021-10-28 22:48:33,986 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1556 transitions. [2021-10-28 22:48:33,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1556 transitions. [2021-10-28 22:48:33,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:33,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1556 transitions. [2021-10-28 22:48:33,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 111.14285714285714) internal successors, (1556), 14 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:34,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:34,002 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 146.0) internal successors, (2190), 15 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:34,002 INFO L186 Difference]: Start difference. First operand has 166 places, 163 transitions, 686 flow. Second operand 14 states and 1556 transitions. [2021-10-28 22:48:34,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 213 transitions, 1088 flow [2021-10-28 22:48:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 213 transitions, 1065 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 22:48:34,034 INFO L242 Difference]: Finished difference. Result has 178 places, 168 transitions, 838 flow [2021-10-28 22:48:34,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=838, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2021-10-28 22:48:34,035 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 47 predicate places. [2021-10-28 22:48:34,035 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 838 flow [2021-10-28 22:48:34,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.35714285714286) internal successors, (1489), 14 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:34,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:34,036 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:34,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:34,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:34,253 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash 245167917, now seen corresponding path program 5 times [2021-10-28 22:48:34,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:34,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296513241] [2021-10-28 22:48:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:34,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:34,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:34,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296513241] [2021-10-28 22:48:34,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296513241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:34,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640912025] [2021-10-28 22:48:34,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:48:34,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:34,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:34,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 22:48:34,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:48:34,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:48:34,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:48:34,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:35,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640912025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:35,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:35,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 22:48:35,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431762418] [2021-10-28 22:48:35,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:48:35,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:48:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:48:35,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 146 [2021-10-28 22:48:35,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 838 flow. Second operand has 14 states, 14 states have (on average 102.71428571428571) internal successors, (1438), 14 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:35,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:35,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 146 [2021-10-28 22:48:35,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:38,177 INFO L129 PetriNetUnfolder]: 4299/8819 cut-off events. [2021-10-28 22:48:38,177 INFO L130 PetriNetUnfolder]: For 16494/16523 co-relation queries the response was YES. [2021-10-28 22:48:38,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25689 conditions, 8819 events. 4299/8819 cut-off events. For 16494/16523 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 73137 event pairs, 787 based on Foata normal form. 15/8298 useless extension candidates. Maximal degree in co-relation 25664. Up to 991 conditions per place. [2021-10-28 22:48:38,377 INFO L132 encePairwiseOnDemand]: 131/146 looper letters, 185 selfloop transitions, 100 changer transitions 0/374 dead transitions. [2021-10-28 22:48:38,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 374 transitions, 2563 flow [2021-10-28 22:48:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 22:48:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 22:48:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2193 transitions. [2021-10-28 22:48:38,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.751027397260274 [2021-10-28 22:48:38,390 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2193 transitions. [2021-10-28 22:48:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2193 transitions. [2021-10-28 22:48:38,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:38,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2193 transitions. [2021-10-28 22:48:38,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 109.65) internal successors, (2193), 20 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:38,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 146.0) internal successors, (3066), 21 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:38,416 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 146.0) internal successors, (3066), 21 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:38,416 INFO L186 Difference]: Start difference. First operand has 178 places, 168 transitions, 838 flow. Second operand 20 states and 2193 transitions. [2021-10-28 22:48:38,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 374 transitions, 2563 flow [2021-10-28 22:48:38,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 374 transitions, 2485 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-10-28 22:48:38,614 INFO L242 Difference]: Finished difference. Result has 204 places, 236 transitions, 1821 flow [2021-10-28 22:48:38,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1821, PETRI_PLACES=204, PETRI_TRANSITIONS=236} [2021-10-28 22:48:38,616 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 73 predicate places. [2021-10-28 22:48:38,616 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 236 transitions, 1821 flow [2021-10-28 22:48:38,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 102.71428571428571) internal successors, (1438), 14 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:38,638 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:38,639 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:38,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:38,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 22:48:38,840 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1495988229, now seen corresponding path program 1 times [2021-10-28 22:48:38,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:38,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179799544] [2021-10-28 22:48:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:38,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:38,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179799544] [2021-10-28 22:48:38,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179799544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:38,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161690358] [2021-10-28 22:48:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:38,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:38,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:38,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:39,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 22:48:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:39,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:48:39,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161690358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:39,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:39,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-10-28 22:48:39,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873554047] [2021-10-28 22:48:39,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:48:39,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:48:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:48:39,814 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2021-10-28 22:48:39,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 236 transitions, 1821 flow. Second operand has 10 states, 10 states have (on average 115.5) internal successors, (1155), 10 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:39,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:39,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2021-10-28 22:48:39,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:40,486 INFO L129 PetriNetUnfolder]: 649/2131 cut-off events. [2021-10-28 22:48:40,486 INFO L130 PetriNetUnfolder]: For 11247/11604 co-relation queries the response was YES. [2021-10-28 22:48:40,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 2131 events. 649/2131 cut-off events. For 11247/11604 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17700 event pairs, 199 based on Foata normal form. 110/2025 useless extension candidates. Maximal degree in co-relation 7340. Up to 412 conditions per place. [2021-10-28 22:48:40,537 INFO L132 encePairwiseOnDemand]: 138/146 looper letters, 67 selfloop transitions, 19 changer transitions 0/254 dead transitions. [2021-10-28 22:48:40,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 254 transitions, 2167 flow [2021-10-28 22:48:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:48:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 22:48:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 939 transitions. [2021-10-28 22:48:40,540 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8039383561643836 [2021-10-28 22:48:40,541 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 939 transitions. [2021-10-28 22:48:40,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 939 transitions. [2021-10-28 22:48:40,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:40,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 939 transitions. [2021-10-28 22:48:40,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.375) internal successors, (939), 8 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:40,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:40,548 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:40,548 INFO L186 Difference]: Start difference. First operand has 204 places, 236 transitions, 1821 flow. Second operand 8 states and 939 transitions. [2021-10-28 22:48:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 254 transitions, 2167 flow [2021-10-28 22:48:40,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 254 transitions, 2049 flow, removed 20 selfloop flow, removed 7 redundant places. [2021-10-28 22:48:40,617 INFO L242 Difference]: Finished difference. Result has 204 places, 235 transitions, 1733 flow [2021-10-28 22:48:40,617 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1733, PETRI_PLACES=204, PETRI_TRANSITIONS=235} [2021-10-28 22:48:40,618 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 73 predicate places. [2021-10-28 22:48:40,618 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 235 transitions, 1733 flow [2021-10-28 22:48:40,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.5) internal successors, (1155), 10 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:40,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:40,619 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:40,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:40,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 22:48:40,833 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:40,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash -210978327, now seen corresponding path program 6 times [2021-10-28 22:48:40,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:40,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604044369] [2021-10-28 22:48:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:40,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:40,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:40,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604044369] [2021-10-28 22:48:40,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604044369] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:40,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797694206] [2021-10-28 22:48:40,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:48:40,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:48:40,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:48:40,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 22:48:41,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-28 22:48:41,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:48:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 22:48:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:48:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:48:41,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797694206] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:48:41,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:48:41,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-10-28 22:48:41,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405498217] [2021-10-28 22:48:41,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 22:48:41,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 22:48:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:48:41,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 146 [2021-10-28 22:48:41,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 235 transitions, 1733 flow. Second operand has 15 states, 15 states have (on average 102.4) internal successors, (1536), 15 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:41,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:41,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 146 [2021-10-28 22:48:41,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:43,966 INFO L129 PetriNetUnfolder]: 4628/9527 cut-off events. [2021-10-28 22:48:43,966 INFO L130 PetriNetUnfolder]: For 33527/33553 co-relation queries the response was YES. [2021-10-28 22:48:44,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32173 conditions, 9527 events. 4628/9527 cut-off events. For 33527/33553 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 80073 event pairs, 1213 based on Foata normal form. 13/9344 useless extension candidates. Maximal degree in co-relation 32136. Up to 1573 conditions per place. [2021-10-28 22:48:44,277 INFO L132 encePairwiseOnDemand]: 130/146 looper letters, 212 selfloop transitions, 97 changer transitions 0/398 dead transitions. [2021-10-28 22:48:44,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 398 transitions, 3274 flow [2021-10-28 22:48:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 22:48:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-28 22:48:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2194 transitions. [2021-10-28 22:48:44,284 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7513698630136987 [2021-10-28 22:48:44,284 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2194 transitions. [2021-10-28 22:48:44,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2194 transitions. [2021-10-28 22:48:44,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:44,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2194 transitions. [2021-10-28 22:48:44,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 109.7) internal successors, (2194), 20 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:44,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 146.0) internal successors, (3066), 21 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:44,300 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 146.0) internal successors, (3066), 21 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:44,300 INFO L186 Difference]: Start difference. First operand has 204 places, 235 transitions, 1733 flow. Second operand 20 states and 2194 transitions. [2021-10-28 22:48:44,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 398 transitions, 3274 flow [2021-10-28 22:48:44,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 398 transitions, 3240 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-28 22:48:44,635 INFO L242 Difference]: Finished difference. Result has 227 places, 266 transitions, 2328 flow [2021-10-28 22:48:44,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2328, PETRI_PLACES=227, PETRI_TRANSITIONS=266} [2021-10-28 22:48:44,636 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, 96 predicate places. [2021-10-28 22:48:44,636 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 266 transitions, 2328 flow [2021-10-28 22:48:44,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 102.4) internal successors, (1536), 15 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:44,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 22:48:44,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:44,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:48:44,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:48:44,857 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 22:48:44,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:48:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1383808087, now seen corresponding path program 1 times [2021-10-28 22:48:44,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:48:44,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189692914] [2021-10-28 22:48:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:48:44,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:48:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:48:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 22:48:44,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:48:44,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189692914] [2021-10-28 22:48:44,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189692914] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:48:44,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:48:44,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 22:48:44,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519396357] [2021-10-28 22:48:44,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:48:44,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:48:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:48:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:48:44,991 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 146 [2021-10-28 22:48:44,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 266 transitions, 2328 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:44,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 22:48:44,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 146 [2021-10-28 22:48:44,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 22:48:45,028 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2021-10-28 22:48:45,029 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-28 22:48:45,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 40 events. 0/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2021-10-28 22:48:45,029 INFO L132 encePairwiseOnDemand]: 141/146 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2021-10-28 22:48:45,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 40 transitions, 122 flow [2021-10-28 22:48:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:48:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-28 22:48:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2021-10-28 22:48:45,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7545662100456622 [2021-10-28 22:48:45,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2021-10-28 22:48:45,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2021-10-28 22:48:45,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:48:45,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2021-10-28 22:48:45,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:45,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:45,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:45,037 INFO L186 Difference]: Start difference. First operand has 227 places, 266 transitions, 2328 flow. Second operand 6 states and 661 transitions. [2021-10-28 22:48:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 40 transitions, 122 flow [2021-10-28 22:48:45,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 40 transitions, 107 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-10-28 22:48:45,039 INFO L242 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2021-10-28 22:48:45,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2021-10-28 22:48:45,040 INFO L334 CegarLoopForPetriNet]: 131 programPoint places, -43 predicate places. [2021-10-28 22:48:45,040 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2021-10-28 22:48:45,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:48:45,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:48:45,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 22:48:45,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 22:48:45,044 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 22:48:45,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 22:48:45,048 INFO L731 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:48:45,052 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 22:48:45,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:48:45,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:48:45 BasicIcfg [2021-10-28 22:48:45,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:48:45,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:48:45,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:48:45,060 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:48:45,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:48:19" (3/4) ... [2021-10-28 22:48:45,064 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:48:45,073 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-28 22:48:45,073 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-28 22:48:45,073 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-28 22:48:45,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-28 22:48:45,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 22:48:45,083 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:48:45,084 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:48:45,149 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:48:45,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:48:45,151 INFO L168 Benchmark]: Toolchain (without parser) took 26982.97 ms. Allocated memory was 119.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 81.5 MB in the beginning and 1.0 GB in the end (delta: -956.9 MB). Peak memory consumption was 371.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:45,152 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 98.1 MB in the beginning and 98.1 MB in the end (delta: 73.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:48:45,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.41 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 93.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:45,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 92.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:48:45,154 INFO L168 Benchmark]: Boogie Preprocessor took 40.44 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:48:45,154 INFO L168 Benchmark]: RCFGBuilder took 661.27 ms. Allocated memory is still 119.5 MB. Free memory was 90.4 MB in the beginning and 76.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:45,155 INFO L168 Benchmark]: TraceAbstraction took 25768.19 ms. Allocated memory was 119.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 75.8 MB in the beginning and 1.0 GB in the end (delta: -966.8 MB). Peak memory consumption was 363.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:45,155 INFO L168 Benchmark]: Witness Printer took 89.83 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:48:45,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 119.5 MB. Free memory was 98.1 MB in the beginning and 98.1 MB in the end (delta: 73.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.41 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 93.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.77 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 92.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.44 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 90.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 661.27 ms. Allocated memory is still 119.5 MB. Free memory was 90.4 MB in the beginning and 76.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25768.19 ms. Allocated memory was 119.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 75.8 MB in the beginning and 1.0 GB in the end (delta: -966.8 MB). Peak memory consumption was 363.3 MB. Max. memory is 16.1 GB. * Witness Printer took 89.83 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 90]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 171 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 302 SDtfs, 1635 SDslu, 1008 SDs, 0 SdLazy, 2991 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 958 GetRequests, 742 SyntacticMatches, 7 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2328occurred in iteration=12, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 2098 NumberOfCodeBlocks, 2089 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2078 ConstructedInterpolants, 0 QuantifiedInterpolants, 5986 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1707 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 20/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 22:48:45,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_068ac221-3e9a-4606-86b8-b3bed56385cf/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...